Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Catalan trist
Proto-Indo-European *tréystis (inherited)
Italian tristo (mention)
Latin trīstis (inherited)
Romanian trist (mention)
Sardinian tristu (mention)

Catalan tristesa (suffix)
Catalan tristor (affix)
Catalan tristament (suffix)
Catalan entristir (affix)
Italian tristo (cognate)
Romanian trist (cognate)